隧道软弱围岩超前预支护技术分析

Technical Analysis of Timbering Beforehand in Tunnel Soft Wall Rocks

根据超前预支护在不同软弱围岩隧道施工中的应用 ,归纳了不同预支护方法的施工工艺及施工中应注意的质量问题 ,并对其进行了比选。提出必须因地制宜、灵活地选用预支护方法 ,达到既保证安全施工 ,又降低工程造价的目的。

On basis of the application of timbering beforehand in different soft wall rocks, this paper summarize the construction methods and the questions in construction of the timbering beforehand, and make some comparision of the several usual methods of timbering beforehand. It is shown that the timbering beforehand methods must be chosen carefully and adjust measures to local conditions. As a result, safe construction and lower cost are ensured.